package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.mapper.SetmealDishMapper;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavors(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }


    @Transactional
    @Override
    public void deleteBatch(List<Long> ids) {
        for(Long id:ids){
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

        List<Long> setmealIds=setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIds != null&&setmealIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        for(Long id:ids){
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }

    }

    @Override
    public DishVO getByIdwithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);

        List<DishFlavor> dishFlavors = dishFlavorMapper.getBydDishId(id);

        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.update(dish);

        dishFlavorMapper.deleteByDishId(dishDTO.getId());

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });

            dishFlavorMapper.insertBatch(flavors);
        }


    }

    @Override
    public void StartOrStop(Integer status, Long id) {
        Dish dish = Dish.builder().id(id).status(status).updateTime(LocalDateTime.now()).updateUser(BaseContext.getCurrentId()).build();
        dishMapper.update(dish);
    }

    @Override
    public List<Dish> listByCategoryId(String categoryId) {
        return dishMapper.listByCategoryId(categoryId);
    }


}
